Is Internet 3D Dead?

Back in 1996, media pundits and internet newbies thought that the Internet was going to all go 3D – with the main UI for the net being a big, VRML world. One could get VRML to work on anything – even Netscape for Irix! Now where is it? What happened to Superscape Viscape, VRML and all of the other nifty 3D interfaces for the world?